Planoqraph co



1.0. HANSEN-ELLEHAMMER.

STEAM ENGINE.

APPLICATION FILED IAN-20. 1919.

1 ,3 1 3 ,278 Patented Aug. 19, 1919.

THE COLUMBIA PLANOCIRAPH c0" WASHINQ'IW. D. C

JACOB CHRISTIAN HANSEN-ELLEI-IAMMER, OF COPENHAGEN, DENMARK.

STEAM-ENGINE.

Specification of Letters Patent.

Patented Au 19, 1919.

Application filed January 20, 1919. Serial no. 272,1eoe.

steam generator of a special 'kind corresponding thereto and rotating therewith. The steam generator is constructed as one or more hollow rings, one or more flexible pipes, or the like, which, in proportion to their volume, have a very great heating surface, and which, .according to the kind and shape of the engine (whether with radial cylinder-axes, or with cylinder-axes rotating on cylindrical or conical surfaces, or of any other suitable known system) are disposed around or at the side or sides of the cylinders or cylinder-complexes of the engine, and themselves are surrounded by a stationary or rotary jacket or furnace, in which, in one or more places, there is fire I or burners.

7 which is fastened in a stationary frame 8'.

. The steanrgenerator and its feeding with water or some other fluid are so arranged that, during the run, there is practically no liquid in the generator, the consumption of steam being supplied directly from the feed-fluid supply, which is vaporized instantly on entering the generator. On starting, the generator contains only the slight quantity of fluid formed, by condensation of its running-contents of high-pressure steam. When the fire is lighted, this small quantity of fluid will at once be transformed into steam, and consequently the engine can be started almost instantly.

By way of example, one form of construction is shown in the drawing.

Figure 1 shows an end-view of the steamengine, partly in section.

Fig. 2 shows half of the engine in longitudinal section, with one of the cylinders situated with its axis in the sectional plane.

The shown rotary engine is of the star type with single-action cylinders 4 with slide chambers 5 and issuing radially from a central crank-case 3. The pistons 6 act on a not shown common crank on a central axle The slides (not shown) are guided from a common cam 9 secured to the axle 7, against whichcam the slide-rods 11, actuated by springs 10, press by means of runner-rollers.

The shown steam generator is a hollow ring with an outer, cylindrical heating-surface 12 and two inner, conical heating-surfaces 13, which are surrounded and held together by means of aring 14 which is U- shaped in section. Outside of the ringgenerator 1214: there is a heating-mantle 15 'shaped'in a corresponding manner, with a projecting part 16, in which there may be inserted suitable, not shown, burners.

The rotary engine and the steam generator are assembled into a mechanical unit, and in the shown example the slide-chambers and the inner ends of the cylinders are connected with the ring 14, so that the cylinders from the spokes-and the generator the rim of thewheel that is revoluble around the stationary crank-shaft 7. The heating-jacket 15 is secured in the frame 8 with the fire-box 16 below it.- Thus the shown generator rotates freely in a surrounding, stationary heating-chamber.

In the prolongation of the axle 7, the craiilccasing 3 has a hollow axle 17, into which lead the exhaust-steam pipes 18 from the slide-chambers 5 (see Fig. 2), and which runs in a bearing 19 in the. frame, to which there is connected a collector 20 with wastepipe 21. The axle 17 is provided with an eccentric for driving a feed-water pump 22 fixed to the frame, which pump presses the water into a stationary pipe 23 inserted into the axle 17 said pipe closely surrounding a rotating pipe 24:, which ends in a head 25. From the latter, through the steam-exhaust pipes 18 and the slide-chambers there are passed feed-pipes 26, which open into suitable places in the generator 12-14, either freely or through valves 27 (see bottom of Fig. 1), which serve to spread the water.

When the engine is to be started, the aforesaid quantity of condensed fluid will'be found at the bottom of the generator, just opposite the furnace16, andwhen the burners are lighted, this liquid will at once evaporate. Through suitable canals 28 (see Fig. 2) or through super-heaters the steam will rush into the slide-chambers and, according to the positions of the different slides, will actuate one or more of the pistons, so that the engine, with the ring-generator, will be set rotating. Thereby the feed-pump 22 is also caused to work, and at each revolution a certain amount of the fluid that has been pre-heated by the exhaust-steam on its way 17, 18 will be injected into the ring-generator. Sincethe latter has a very great heating-surface in proportion to the quantity of the entering water, the water will at once evaporate, and the rotation will be continued. The relation between the capacity of the feed-pump and the consumption of steam of the desired pressure by the cylinders are so regulated that, with normal speed and load of the engine, just that quantity of fluid will be supplied which will cover the momentary steam consumption. In order that a surplus of fluid will not be pumped in under possible running condition that might cause a rise of the steamprcssure in the generator, the feed-pump may be so eonstructedthat its work will be entirely or partially stopped during the run. For this purpose the pistonrod of the pump may be made in two parts 29 and 30, between which the motive power is transmitted through a pressure-spring 31. This spring is arranged so as to be compressed but slightly or not at all by the normal counter-pressure on the pump, but, when the counter-pressure increases, it is compressed more and more, and finally it does not transmit any motive-power at all from the part 29 to the part 30.

Since the walls of the ringgenerator (partly for the sake of heat-generation and partly for the sake of lightness, for instance when used in vehicles, 'tlying-machines, and

' the like) ought to be as thin as possible, it

will in many cases be necessary to give them special re-inforcement. For instance, as shown in Fig. 2, the cylinder wall 12 can be re-inforced by means of one or more spirally coiled Wires 32, whose ends are fastened to the said wall.

The slide-valve mechanism can be constructed so as also to serve for reversing the engine. The stationary cam 9 has, for this purpose, two guide arcs 33 and 34, which lie symmetrically with respect to the plane of the crank, one of which arcs is active in forward run and the other in reverse run. Close outside the cam there is a circular pulley 35 of the same or somewhat larger dian'iet-er, and the rollers of the slide-bars 11 run both on the cam 9 and the pulley 25.. The latter is revolubly connected with the former by means of an eccentric pin 36, and it has recesses 37 on both sides of the-axle 7, so that it can be turned a certain angle around the pin 36 and be held in the turned position-bymeans of a suitable mechanism,

6. g. a traction-rod 38 and a hand-lever 39, which, by means of a pin l0, meshes into a segment ll (see Fig. 2). With the concentric situation of the two pulleys (wheels) shown in Fig. 1, the slides will not be moved at all. This position corresponds to the stopping of the motor, and it will also temporarily be assumed in starting and revel"- ing. If the cam 35 is turned to the right from the shown position, the movement of the slides will be guided by its right edge, in connection with the are 33, and if it is turned to the left, the movement will be guided by-its left edge, in connection with the are 3%. p

The details shown in the drawing are however not essential to the invention and may be modified in many different ways.

I claim 1. A rotary steam engine, comprising a Wheel having a. hollow rim constituting a steam generator and engine cylinders secured thereto, valve chambers on said cylinders, a central shaft, valve mechanism operated from said shaft, means for supplying feed water to said steam generator, and a heating chamber inclosing said wheel.

2. A rotary steam engine comprising a wheel having a hollow shallow laterally extending rim constituting a steam generator and engine cylinders secured thereto, valve chambers on said cylinders, a central shaft, valve mechanism operated from said shaft, means for supplying feed water to said steam generator, and a heating chamber inclosing said wheel.

3. A rotary steam engine comprising awheel having a hollow rim constituting a steam generator and spokes in the form of engine cylinders secured thereto, valve chambers on said cylinders, a central shaft, valve mechanism operated from said shaft, means for supplying feed water to said steam generator, and .a heating chamber inclosing said wheel.

4. A rotary steam engine comprising a wheel having a hollow rim constituting a steam generator and engine cylinders secured thereto, valve chambers on said cylinders, a central shaft, valve mechanism operated from said shaft, means for supplying feed water to said steam generator, and a heating chamber inclosing said wheel and provided with a projecting burner chamber.

In testimony, that I claim the foregoing as my invention, I have signed my name in presence of two subscribing witnesses.

JACOB CHRISTIAN HANSEN-ELLEHAMMER.

Witnesses:

N. NUNL. JENSEN, E. WV. Ennsnow.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner 01'- Eatents, Washington, D. G. 

